Sun has fewest sunspots since 1913, better GPS
Thursday, April 2, 2009 - 16:28
in Astronomy & Space
WASHINGTON (AP) -- The sun has been unusually quiet lately, with fewer sunspots and weaker magnetic fields than in nearly a century. A quiet sun is good for Earth: GPS systems are more accurate, satellites stay in orbit longer; even the effects of manmade global warming are marginally reduced, though just by three-tenths of a degree at most....